Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Proto-West Germanic
*skarpijan
→
Middle Dutch
scherpen
(inherited)
→
Dutch
scherpen
(inherited)
→
Old Dutch
skerpen
(inherited)
→
Old Saxon
skerpian
(inherited)